BMP (bicycle Motor Parts, USA made) is offering a new kit, with chain drive to the wheel. This can help build a folding bike, BMX bike, or almost any road or mountain bike with an engine kit behind the seat!

This can work on many more bicycles, and allows you to use better motors like the Harbor Freigh BMP, Pocket Bike engines, and industrial trimmer/auger motors instead of the frame mounted china kits! http://motoredbikes.com/attachment.p...5&d=1291680616http://www.bikemotorparts.com/combokit4X.jpg

This is similar to their friction drive kit, but by doing a little more work (mounting the toothed cog on the hub or buying a specialised hub/wheel), you get the benefits of majorly increased traction in wet weather, off road ability (dirt doesn't get up in the roller), and very simple replacement of the chain (just "cut" the chain with $5 chain tool, and shorten new chain to length, install in 5 minutes, without removing covers or gears or even the wheel.

I am convinced this is the all time best bicycle engine system because its behind the seat and doesn't look like a motorcycle, its pull start, automatic clutch, uses engines that can be repaired at lawn equipment dealers, and allows a very fast top speed (30-40mph).

You can keep all your pedal gears intact without shift kits or free-coasting cranksets.

. This is not the same type of "radial" engine as a wankel engine, like in RX7 mazda cars and dune buggies. Some motorcycles do have small wankel rotary engines though.

Antique rotary engine moped, with 5 cylinder engine built into the wheel!

This is a powerful bike that makes a really cool airplane engine sound!
This is like some kind of Steampunk time machine! This is timeless style!

This reminds me of a motor bicycle kit I saw before, but that is not available now. I covered a prototype modern bike motor kit that used a 1 cylinder engine and tank enclosed in a wheel, but its producer went out of business.

I haven't read the posts before and perhaps this has already been said.. but if you're young (under 50?) and not disabled, why get a power assisted bicycle? Ride an ordinary bike the proper way and benefit from vastly increased health. I used to see a man in his 70s or 80s making very long bike rides in my city, anywhere in range of a battery assisted bike is in range of a manually operated bike.

SF Moped Thread is about small fuel efficient vehicles for survival and commuting (sometimes the same thing), and the thrills of tinkering and engineering, and salivating over retro style small motorcycles.

The reason I ride a moped bicycle is because I can go farther and faster than on my pedal bicycle, and also because its great for wearing street clothes and carrying groceries. I love bicycling for fun, and I've commuted sometimes by road bicycle also. I think of bicycling as a sport, and motor vehicles as transportation for work or appointments. I thought commuting anywhere by bicycle pretty much sucked. My ALMO is a pedal assisted motorcycle, just made to defy laws on mopeds and motorcycles by being small engine size and 30mph speed. More than that, and I would have to comply with registry, DOT rules on tires and parts, licensing, insurance, etc.

I haven't read the posts before and perhaps this has already been said.. but if you're young (under 50?) and not disabled, why get a power assisted bicycle? Ride an ordinary bike the proper way and benefit from vastly increased health. I used to see a man in his 70s or 80s making very long bike rides in my city, anywhere in range of a battery assisted bike is in range of a manually operated bike.

Here is a great solution for China kit users and BMP chain drive or Staton drive users, to mount a 9 hole common sprocket (free to $50, 34t-60 tooth available on internet) on any wheel, including standard walmart bikes, shop bikes, road bicycles, tandems, etc.

Hybriped kit 50. See the big mounting area. This beats the 9hole Rag Joint by far, and lets you use flat "racing" sprockets in smaller sizes like 34t or 36 tooth.

With a 34 or 36 tooth sprocket you can haul ass on flat ground, and by pedaling along on your multigeared bike, you can supplement the engine in low RPM phase while going up hills to keep speed. http://www.bicycle-engines.com/images/images_big/hybriped-front-back.jpg

You can also pull the ringed pins out and pedal with no clutch resistance, using the BMX type freewheel embedded in the design

American company Bike Motor Parts demonstrates their new product, american product Chain Drive BMP Kit, with popular economy industrial engine from china, the Harbor Freight 52cc. You can see the parts and hear the sound of the motor.

If you get this motor, it should last a surprisingly long time, and have quite a bit of power (its a clone of a popular Honda engine) . If you want a finer motor later, you can upgrade before it wears out, like a Honda , Stihl, or Pocketbike engine. With engine repairs for lawn stuff typically slow and expensive, its best to just get another $100 engine for a backup if you use this to go to work.

Quote:

Originally Posted by Southern Courtesy

See SF Bicycle Thread for that. (pedal cycles and commuting)

SF Moped Thread is about small fuel efficient vehicles for survival and commuting (sometimes the same thing), and the thrills of tinkering and engineering, and salivating over retro style small motorcycles.

The reason I ride a moped bicycle is because I can go farther and faster than on my pedal bicycle, and also because its great for wearing street clothes and carrying groceries. I love bicycling for fun, and I've commuted sometimes by road bicycle also. I think of bicycling as a sport, and motor vehicles as transportation for work or appointments. I thought commuting anywhere by bicycle pretty much sucked. My ALMO is a pedal assisted motorcycle, just made to defy laws on mopeds and motorcycles by being small engine size and 30mph speed. More than that, and I would have to comply with registry, DOT rules on tires and parts, licensing, insurance, etc.